EP 1387496 A2 20040204 - Satellite communication system utilizing low density parity check (LDPC) codes
Title (en)
Satellite communication system utilizing low density parity check (LDPC) codes
Title (de)
Satellitenkommunikationssystem mit Low Density Parity Check (LDPC) Codes
Title (fr)
Système de communication par satellite utilisant des codes LDPC (Low Density Parity Check)
Publication
Application
Priority
- US 39876002 P 20020726
- US 40381202 P 20020815
- US 35322403 A 20030128
Abstract (en)
An approach for reliably communicating over a satellite (111) in support of a communication service including, for example, as direct broadcast satellite and data service, is disclosed. An input message is encoded, yielding a structured Low Density Parity Check (LDPC) coded message. The coded message is modulated according to a high order modulation scheme that has a signal constellation representing more than two symbols per signaling point-e.g., 8-PSK (Phase Shift Keying) and 16-QAM (Quadrature Amplitude Modulation). The system includes a transmitter (200) configured to propagate the modulated signal over the satellite (111). The above approach is particularly applicable to bandwidth constrained communication systems requiring high data rates. <IMAGE>
IPC 1-7
IPC 8 full level
H03K 7/06 (2006.01); H03K 9/06 (2006.01); H03M 13/09 (2006.01); H03M 13/11 (2006.01); H03M 13/19 (2006.01); H03M 13/25 (2006.01); H03M 13/29 (2006.01); H04B 7/185 (2006.01); H04B 7/208 (2006.01); H04L 1/00 (2006.01); H04L 27/18 (2006.01); H04L 27/20 (2006.01); H04L 27/34 (2006.01); H04L 27/36 (2006.01); H04Q 7/00 (2006.01); H03M 13/15 (2006.01); H04H 1/00 (2006.01); H04H 40/90 (2008.01)
CPC (source: EP KR US)
H03M 13/11 (2013.01 - KR); H03M 13/1111 (2013.01 - EP US); H03M 13/118 (2013.01 - EP US); H03M 13/25 (2013.01 - EP US); H03M 13/255 (2013.01 - EP US); H03M 13/2906 (2013.01 - EP US); H04L 1/005 (2013.01 - EP US); H04L 1/0057 (2013.01 - EP US); H04L 1/006 (2013.01 - EP US); H04L 1/0061 (2013.01 - EP US); H04L 1/0065 (2013.01 - EP US); H04L 1/0071 (2013.01 - EP US); H04L 27/20 (2013.01 - EP US); H04L 27/34 (2013.01 - EP US); H04L 27/36 (2013.01 - EP US); H03M 13/152 (2013.01 - EP US); H04H 40/90 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1387496 A2 20040204; EP 1387496 A3 20040317; CN 100490351 C 20090520; CN 1492598 A 20040428; HK 1065660 A1 20050225; JP 2004064757 A 20040226; JP 3990323 B2 20071010; KR 100567698 B1 20060405; KR 20040010115 A 20040131; US 2004028002 A1 20040212; US 6829308 B2 20041207
DOCDB simple family (application)
EP 03254299 A 20030707; CN 03132884 A 20030724; HK 04108447 A 20041028; JP 2003176331 A 20030620; KR 20030039764 A 20030619; US 35322403 A 20030128